===== Bluetooth: protocol not available =====

<code bash>
sudo apt install pulseaudio-module-bluetooth
</code>

Add to ''%%/lib/systemd/system/bthelper@.service%%'':

<code ini>
ExecStartPre=/bin/sleep 4
</code>

<code bash>
sudo systemctl start sys-subsystem-bluetooth-devices-hci0.device
sudo hciconfig hci0 down
sudo killall pulseaudio
systemctl --user enable --now pulseaudio.service
sudo systemctl restart bluetooth.service
</code>